The hole in the tag was designed for 550 parachute cord. The tag can be tied to zippers to help with opening and identification. It can also be attached to a backpack to identify a pocket that contains first aid supplies.
Designed to be printed in two colors. Use PrusaSlicer to create a color change during the print. More info here: https://help.prusa3d.com/en/article/color-change_1687
The author hasn't provided the model origin yet.